Ford Corsar Repair Manual page 470

TROUBLE-SHOOTING AND DIAGNOSES
p i E i q
Contents
How to Perform Trouble Diagnoses for Quick and Accurate Repair
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AT-28
Preliminary Check
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AT-29
A/T Electrical Parts Location
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AT-39
Circuit Diagram for Quick Pinpoint Check
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AT-40 . .
Wiring Diagram
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AT-4 1
Self-diagnosis
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AT-43
SELF-DIAGNOSTIC PROCEDURE
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AT-43
JUDGEMENT OF SELF-DIAGNOSIS CODE
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AT-44
REVOLUTION SENSOR CIRCUIT CHECK
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AT-48
SPEED SENSOR CIRCUIT CHECK
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AT-48
THROTTLE SENSOR CIRCUIT CHECK
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AT-49
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SHIFT SOLENOID A CIRCUIT CHECK
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AT-50
SHIFT SOLENOID B CIRCUIT CHECK
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AT-5 1
TIMING SOLENOID CIRCUIT CHECK
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AT-52
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LOCK-UP SOLENOID SENSOR CIRCUIT CHECK
AT-53
FLUID TEMPERATURE SENSOR CIRCUIT AND
A/T CONTROL UNIT POWER SOURSE CIRCUIT CHECKS
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AT-54
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ENGINE REVOLUTION SIGNAL CIRCUIT CHECK
AT-55
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LINE PRESSURE SOLENOID CIRCUIT CHECK
AT-56
INHIBITOR, OVERDRIVE AND THROTTLE VALVE SWITCH
CIRCUIT CHECKS
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AT-57
Diagnostic Procedure 1
(SYMPTOM: Power indicator lamp does not come on for about 2 seconds
when turning ignition switch t o "ON".)
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AT-59
Diagnostic Procedure 2
(SYMPTOM: Power indicator lamp or comfort indicator lamp does not
come on when turning A/t mode switch t o the appropriate position.)
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AT-60
Diagnostic Procedure 3
(SYMPTOM: O.D. OFF indicator lamp doess not come on when setting
overdrive switch t o "OFF" position.)
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AT-60
Diagnostic Procedure 4
(SYMPTOM: Power indicator lamp does not come on for about 3 seconds
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when depressing and releasing accelerator pedal fully.)
AT-6 1
Diagnostic Procedure 5
(SYMPTOM: Engine cannot be started with selector lever in "P", or "N" range
or engine can be started with selector lever in "D", "2",
"
1" or "R" range.)
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AT-6 1
Diagnostic Procedure 6
(SYMPTOM: Vehicle moves when it is pushed forward or backward with
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selector lever in 'P" range.)
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AT-62
Diagnostic Procedure 7
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(SYMPTOM: Vehicle moves forward or backward when selecting "N" range.)
AT-62
Diagnostic Procedure 8
(SYMPTOM: There is large shock when changing from "N" to "R" range.)
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AT-63
Diagnostic Procedure 9
(SYMPTOM: Vehicle does not creep backward when selecting "R" range.)
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AT-64
Diagnostic Procedure 1 0
(SYMPTOM: Vehicle does not creep forward when selecting "D",
"2"
or
"
1" range.)
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AT-65
Diagnostic Procedure 1 1
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(SYMPTOM: Vehicle cannot be started from D,.)
AT-66
Diagnostic Procedure 1 2
(SYMPTOM: A/T does not shift from D, t o D , at the specified speed
.
A/T does not shift from D , t o D , when depressing accelerator pedal fully
at the specified speed.)
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AT-67
Diagnostic Procedure 1 3
(SYMPTOM: A/T does not shift from D , t o D , at the specified speed.)
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AT-68